Cabel tv picture and sound will not stay on unless i leave up the tv menu

If I leave the TV menu up in either input source or channel scan at 100% completion cable TV works just fine, if I exit the menu 3 seconds later the picture and sound are gone the TV it self is still on just no cabel

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Hi rduncan27,
I will be happy to help. 88% of LCD tv problems are with the backlight, the symptoms you described indicate a probable inverter malfunction.
Lets do a simple test to check the functionality.

green screen on hdmi is normally a defective hdmi cable. 1st try a different device , like a dvd player. if same problem try dif cable. if it still does not work you have a defective signal pcb otherwise known as a main pcb.

I recently got this tv from somone because of this exact problem. I have found a solution that works for mine. You can check to see if it works for you also. What I did was take of the back cover. 3 screws (1 big one in the center and 2 little ones below it). Next look at the power board. If plugged in and turned on the red light on the power board should be lit up. If so your power board is fine. Next find the component that has 4 switches. I manually turned these on and turned the tv on and it worked! Has been working ever since!

I'm assuming that the cable is connected directly to the tv, not thru a box, otherwise you will need to check the box by plugging it in another tv - if it's the same then the box is dead: call the cable company and tell them to come and replace it.The tv can turn on when there is a broken component inside it - it shuts down or refuses to start only if the defect is large enough to block or damage the power source and clearly that is not your case.Do a simple test: disconnect the cable from the tv, plug in a rabbit ear aerial and see if the tv picks something . If it does then it definitely is the cable, not your tv. If nothing is detected then do one more test: connect the same cable in another tv. If that tv shows the image then your tv is indeed defective.If the menu appears correctly but nothing is detected then the defect is in the tuner - it got fried. It can be replaced on its own but the procedure is complicated and must be done by a pro. So it will cost a lot - it will be cheaper in the end to sell this tv for parts on Craigslist and buy a new one than to repair it.

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Related Questions:

It depends on the TV. First make sure that the active Input is TV. On some TVs, you may need the original remote or an universal remote that has an Input or Source button (and a code that enables that function for your TV). Some TVs have the Input or Source button on the TV as well or a Menu option to change inputs.

Next enter the On-screen Menu and find a Channel or TV setting option. In that sub-menu, you will find a Source option. (It may give the choices of Air or Cable.) After you set that to the Air, you'll need to scan for channels.

Please add a comment with the model of your TV for additional assistance. I hope this generic comment helps.

If you are using a cable-system set-top box and running it to the Coaxial input of the TV, then you need to perform the channel scan. If you are using a set-top box and are using a composite or HDMI input cable to the TV, then no channel scan is required. You merely need to use the SOURCE button on the TV remote to choose the composite or HDMI input connection. Nd if you are getting a "no signal" indication on the TV, it IS on.

All of the cables physically connected to the TV and the input device are secure.

The input device is turned on.

Your TV needs to scan for channels before it can show programming from an antenna, from cable TV when the cable comes directly from the wall (no cable box), or from a cable or satellite box connected to the TV with a coaxial (RF) cable. Do not scan for channels if you have a cable or satellite box connected using AV (Composite), Component, or HDMI cables. The box selects the channel, not the tuner inside your television. If you are not using the "TV" input, press the INPUT button on your remote until the correct input mode is selected.
To perform a channel scan using the coaxial input:

Press the INPUT button on your remote to view your current input source. The TV (coaxial cable) input must be selected. This may appear as "TV," "ANT," or the channel and call letters of a station.

If the TV input is not selected, press INPUT until the TV input mode is selected.

Open the on-screen menu and select TV or Tuner option. (This varies by model.)

Highlight Tuner Mode and select the correct option:

Antenna-over-the air signals from an antenna

Cable-direct from the wall cable TV, or a cable or satellite box connected to the TV with coaxial cable

Select Auto Search or Auto Channel Scan. (This varies by model.)

When the search reaches 100% complete, exit to the menu.

Check the available channels:

Antenna or direct-from-wall cable-Press the Channel Up and Channel Down buttons on your VIZIO TV remote to view the available channels.

Cable or satellite box- Will return only one channel. Use the cable or satellite remote's Channel Up and Channel Down buttons.

If this does not resolve the issue, power cycle the TV and then re-run the channel scan:

Turn off the TV.

Unplug the TV from the electrical outlet.

While the TV is unplugged from the wall, press and hold the Power button on the TV for 30 seconds.

Release the power button.

Plug the TV back into the electrical outlet.

Turn on the TV.

Note: There is also an option to reset the TV to the factory default settings. This option is in either the SETUP or SYSTEM section of the on-screen menu. The option may be "Reset all settings", "System Reset," or "Reset & Admin." Consult your TV's user manual for the location and steps for resetting your model.

Remove the coaxial cable from the DTV/TV connector on the back of your television and perform a channel scan to clear the existing channels. See the procedure above. This should not find any channels.

Re-attach the coaxial cable to the DTV/TV connector and perform a new channel scan.

This video shows troubleshooting steps to use when a "No signal" message appears.

What type of antenna are you using? Or what is your source for accessing channels? (i.e. - are you connecting to a cable tv service box or are you using a receiver ect.) Make sure that your source is connected to the input method that you are currently using on the tv.

There are many input methods to choose from in the settings of the tv. They are generally called antenna 1, antenna 2, cable, aux, hdmi - and a few other names. There should be a button on your remote to change them. The function is usually called "source" or "input". Press that button to change the input method until you get a picture on the tv or pick up some sort of reception. when you have the tv set on the same method of input that your antenna source is connected to, you will get channel reception or some sort of picture. Thats when you use the menu functions to auto find channels for you and let it go through its checking scan to report how many it has picked up.

If its running the scan for channels and not locating any stations, and the picture is either scrambled with the white noise sound tv's make when off channel or if its just single color screen without any sound - then you know the antenna input method you have chosen on the back of the tv is not the current method set in the settings under the menu key.

Most of the time the inputs are labeled on the back. If you look under the cable antenna connection, it should say "cable" somewhere in small print - or "antenna 1 input", antenna 2 ect. Look on the back of the tv. If you are using RCA jacks that are labeled right and left for sound and a third connector for video ect, look for the name of the input method of those three connections on the back of the tv. It should be marked as input - aux 1 ect. Then just change the source chosen in the tv to match it and have it auto program your channels.

Yes, enter the menu. Look for signal source (ant/cable) select cable. Then run channel scan. This is an older TV and will require some time for the system to scan the cable channels and adjust. The process could take up to 20 min. Do not disrupt. Wait fo unit the TV is completed the process. If you have the operations manuel, the step by step for this process is posted.

Please note this TV is only capable of process NTSC TV signals. If the cable company you are using is supply Digital or Quam or ATSC type signals then the TV just won't work.

G-link can be turned off through the menu. You should see that selection in the first or second page of the set up menu. G-link is for TV guide and record setup for VCR operation. The TV guide should also be set to off or "no" in the same setup menu. You MUST got through the complete setup menu in order for the TV Guide not to try to operate each time you turn on the TV.

I'm assuming your Antenna is connected to your TV with a co-axial cable? If so, please make sure you have run the Analogue/Antenna/Air channel scan correctly:

1. Switch the TV on2. Press the "MENU" button on the Curtis remote supplied with the TV.3. Press the RIGHT arrow button five times to highlight the "Channel" menu4. Press the"ENTER"button or the DOWN arrow once to open the "Channel" menu

The Air/Cable option should be highlighted.

5. Use the LEFT/RIGHT arrow buttons to set the "Air/Cable" option to "Air"6. Press the DOWN arrow to highlight "Auto Scan"7. Press the "ENTER" button or the RIGHT arrow once to start the automatic channel scan.

When the scan has finished, the TV should automatically return to viewing mode. If not, just press the "EXIT" or "MENU" button on the remote to close the menu.

You also need to make sure the correct INPUT/SOURCE is selected on the TV:

1. Press the "SOURCE" button on the Curtis remote2. Use the UP/DOWN arrows to highlight "TV" in the INPUT SOURCE menu3. Press the "ENTER" button on the remote to select "TV" and close the INPUT SOURCE menu.

This should be all you need to do to watch your TV from an antenna source.

Please post back if you are still unable to get it to work and need further assistance.

On a satellite system the receiver must stay connected to the location it was installed in order to access programming or be connected to a location that has been specifically wired to allow you to switch outlets. If you did not ask for this at the time of install it would not have been included due to additional expenses that may arise out of this action.

Assuming that you have the receiver at the original location ensure that the cable is on the 3-4 out port on the back of the receiver and that the other end is on the proper port on the back of your tv as some have more than one port since the introduction of digital signals as the primary communication signal on newer equipment.

If you are good to go with the above the next step is to ensure you are on the correct channel and or source. Try going to channel three using the channel button on the tv itself. If you can not get there you may need to go into the tv menu and perform a channel scan.

If you can not change the channel try using the input or source buttonn on the tv itself or the tv original remote to cycle through the inputs and get on to the source named TV or you may just see a numerical value displayed as the input. Once there you will need to use the tv channel buttons to get to channel 3.

If all of the above fails try using a dvd player to ensure that the tv is still able to display a picture and that the TV is not the source of the issue.

It sounds like your TV is on a different input. If you watch your cable from an external cable box, and this box is plugged into your TV using wires that are yellow, red, and white, or red, blue, green, red and white, you're currently watching TV on a different input than the one used for the antenna. Channels in a TV are controlled by the tuner. The tuner is the silver, threaded, post on the back of a TV, DVR, converter box, or VCR, that you plug an antenna or cable wire to. The tuner contols channels while the other inputs on your TV carry a direct signal like a computer to a monitor. So when you use something other than coaxial cable to connect cable to your TV, you can't access the channel menu while on that input. To access that menu, change the TV's input or source to TV or stop when you see a channel number on the screen. You have to be on the TV or tuner input in order to access the channel menu. If you're on any other input such as, S-Video, AV1, AV2, component (Yp Br Cr), HDMI, etc. you will not be able to do a channel scan. You have to be on the right input or source.

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when you ran the autoprogramming it scanned all the channels you are receiving.the dvd is probably plugged into a line or aux input on back of your tv.look for a input or source button on the remote. some tv's have more then 1 input source so be sure to scan thru all input choices.also if it is a dvd/vcr combo & if there is a coax out connection to your tv coax/rf input the tv and/or cable box should be on channel 3
hope this helps
w.g